Euphytica

, Volume 203, Issue 2, pp 409–420 | Cite as

Genetic analysis of seed related traits in Orchardgrass (Dactylis glomerata) under normal and drought stress conditions

  • Mohammad Mahdi Majidi
  • Behnam Hoseini
  • Mozhgan Abtahi
  • Aghafakhr Mirlohi
  • Bahram Araghi
Article

Abstract

In forage grasses, knowledge about genetic analysis of seed production and its association with related traits under water deficit condition is very limited. Half sib families derived from polycross of 25 Orchardgrass genotypes were evaluated under normal and drought stress environments in the field during 2012 and 2013. Results showed that drought stress had negative effect on seed yield and reduced genotypic variation of measured traits. High genotypic variation was observed among families for seed yield and its components indicating high potential for improving these traits through targeted selection in breeding programs. Narrow sense heritability (\(h_{n}^{2}\)) ranged from 0.23 (flag leaf weight) to 0.77 (day to anthesis) and were moderately high for plant seed weight (0.46). Moderate to high heritability for seed yield components indicated that phenotypic selection for these traits can be successful. Seed yield had positive correlation with ear weight per plant, 1,000-seed weight, number of ear per plant, number of seed per panicle and seed weight in panicle. High association between seed yield and some seed yield components (especially number of ear per plant and 1,000-seed weight) as well as the high heritability of these traits indicated that indirect selection, based on seed yield components, would be more effective to improve seed yield of orchardgrass in both normal and drought stress environments.

Keywords

Drought stress Heritability Orchardgrass Polycross 

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Mohammad Mahdi Majidi
    • 1
  • Behnam Hoseini
    • 1
  • Mozhgan Abtahi
    • 1
  • Aghafakhr Mirlohi
    • 1
  • Bahram Araghi
    • 1
  1. 1.Department of Agronomy and Plant BreedingCollege of Agriculture, Isfahan University of TechnologyIsfahanIran

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